水淹程度对滩地枫杨主要力学性质的影响  

Effect of Flooding Degree on the Main Mechanic Propertiesof Pterocarya stenoptera Grown in the Beaches

作　　者：汪佑宏[1] 曹仁忠 徐斌[1] 刘杏娥[1] 

机构地区：[1]安徽农业大学森林利用学院,合肥230036 [2]安徽省全椒县马厂林业站

出　　处：《安徽农业大学学报》2003年第2期168-172,共5页Journal of Anhui Agricultural University

基　　金：国家"九五"林业科技攻关专题的一部分。

摘　　要：研究结果表明,滩地枫杨各项力学指标基本上都是水淹1月(第1组)比水淹2月(第2组)大,但按材质等级来评估滩地枫杨木材材质便发现枫杨木材材质均在中等偏下,差异分析表明在0.05水平上差异显著。对枫杨木材主要物理力学指标作主成分分析,结果说明了木材干缩性是滩地枫杨木材的第一主成分,称为干缩指标;而力学强度为第二主成分,称为强度指标。The results indicated that the mechanical strengths of No1 group (flooded for one month) were nearly all higher than that of No2 (flooded for two months),and nearly all the discrepancies of them were significant at 005 level.Based on the property grade,all the properties of the wood were lower than that of middle grade.Principal component analysis on physical and mechanical properties of wood of Pterocarya stenoptera indicated that the shrinkage was the first prinicipal component and the mechanical strength was the second one.

关 键 词：水淹程度 滩地 枫杨 木材力学性质 

分 类 号：S792.11[农业科学—林木遗传育种] S781.2[农业科学—林学]